Shade-roller



D. E. SCHIMMEL.

SHADE ROLLER.

A P P L l C A T I 0 N F l L E D F E B 2 8 1 9 2 0.

1,361,778# Patented Dec. 7, 1920.

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- `mofwfm PATENT OFFICE.

DAVID E. SCI-IIMMEIA', 0F BROOKLYN, NEW YORK.

` SHADELROLLER.

Specification of Letters Patent.

i- Application led February 28, 1920. Serial No. 361,921. n

T all whom t may concern.'

Be it known that I, DAVID E. Serri-Mirar., a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Shade-Roller, of which the following is a full, clear, and exact description.

This invention relates` tov shade rollers for windows, and has for an object to'provide an improved construction wherein the various parts are simplified and constructedl so as to be manufactured at a minimum price without diminish-ing their strength or effectiveness when in operation.

Another object of the invention is to pro` vide a shade roller with an improved form of pawl and ratchet mechanism having a minimum number of parts and arranged so as to operate smoothly and yet positively.

A still further object of the invention is to provide a pawl and ratchet mechanism for window shade rollers in which means are provided which co-act with the spring and roller for positively gripping when the roller is being unwound and for easily releasing when the spring is rewinding the shade. v

In the accompanying drawing:

Figure 1 is a view partially in elevation and partially in section showing a shade' roller having a construction embodying the invention applied thereto.

Fig. 2 is an end view of the construction shown in Fig. 1. f

Fig. 3 is a sectional view through. Fig. 1 on line 3 3.

Fig. 4 is a view similar to Fig. 3 Vbut showino the parts in a different position.

eferring to the accompanying drawing by numerals, 1 indicates a shade rollerl of any desired kind for receiving a window shade, said roller having a pintle' 2 at one end of any desired construction, and a pintle.

3 merging into a bar 4 to which the spring 5 is connected, said sprlng being also con.-

nected with the roller l in any desired man-` ner. The bar 4 merges into a bearing member 6, which has a flange 7 and which is formed with a notch '8. This socket is arcshaped at the bottom, but diverges somewhat at the top, said divergence being in a straight line. A rockable and auxiliary catch 9 is loosely positioned in the notch 8, said auX- iliary catch being formed so that its base will fit the arc-shaped part of the notch 8,

and said base having an extension 1() which provides a point 11. The back of the extension 10 is intended to fit iatwise against the sides12 and 13 of the'diverging part of the notch 8.

When theparts are in the position shown in F 1g. 3 the auxiliary catch 9 is inoperative, but when the parts have been operated to cause a winding of the shade under the action of spring 5 one of the points 14 will strike the back of the extension 10 and shift the same until the point 11 fits against the slightly cutaway portion 15. Preferably the point 11 projects a slight distance beyond the cutaway portion 15 of the bearing member 6 so as to cause the friction of the men1- ber 16 against the same and the action of the pins 14 to'revolve the bearing Inember back to substantially the position shown in Fig. 3 whereby the wall 13 of the notch 8 may project into one of the cut out portions 17 and bear against one of the shoulders 18 as shown in Fig. 3. An imaginary circle touched by the points 14 is slightly larger than the diameter of the bearing member 6 so that there will be an ample looseness for proper operation and ample looseness for allowing the pin 11 to properly operate. Preferably the cut out portions V17 .are cut on an arc having the same radius as the periphery of the bearing memberA 6 so that the bearing member 6 may fit snugly into any of the notches 17 as indicated in Fig. 3. It will be observed Vthat the plate or member 16 acts as a pawl plate while the beari-ng member 6 acts as a ratchet, said bearing member being either formed integral with the bar 4 Vor rigidly secured thereto in any desired manner. The pawl plate 16 may be held inL place in any desired manner, preferably by having part thereof bent over and pressed into the roller 1 at 19. The bearing member 6y is held stationary by having the pin 3 flat Vand fitting into a suitable notch in a well known or special form of fitting. It is also evident that pin 3 could be held against rotation `in any desired manner so that the spring 5 Inay freely rotate the,

roller 1 in one direction while a person operating the shade may cause a rotation in the opposite direction in the usual manner.

In operation the parts are in the position shown in Fig. 3, and when it is desired to 'unoll the shade the operator grasps the shade at any desired point and merely pulls upon the same, which will cause the plate Patented Dec. 7, 1920. j

or member 16 to rotate in the direction of the arrow in Fig. 3. In case the parts are in the position shown in F ig. 3 and it is desired that the shade should be rolled under the action of spring 5 the shade is pulled substantially in a well known manner and given a short pull downwardly and then released as soon as the pin 14 engaging the portion 15 is past the point 11 of auxiliary catch 9 the shade should be released whereupon the pin 14 will move bearing member 6 as shown in Fig. 4 so as to provide a comparatively smooth surface for the rotation of member 16. This rotation is continued until the shade has been wound to the desiredA extent and is then checked by holding the shade against movement and possibly giving the same a slight jerk so as to cause the parts toY interlock as shown in Fig. 3, the action of spring 5 and the pull on the shade causing the parts to quickly interlock.

What I claim is: Y

1. A ratchet and pawl structure for shade rollers comprising a non-movable bearing member having projecting therefrom, av stationary bar and a retaining pin, said bearing member having a notch whereby a projection or ratchet structure is produced, and

a co-acting plateadapted to be connected with a roller formed with a plurality of projections positioned to move into said notch when the roller isbrought to a standstill.

2. A shade roll structure comprising a roller provided with a spring, a non-movable bearing member having a stationary rod connected with one end of said spring, said bearing member having a comparatively large notch extending from the periphery toward the center whereby a shoulder or projection is provided, and a plate connected with said roller formed with a plurality of inwardly projecting shoulders adapted to overlap the shoulder on said bearing member at different times, said bearing member being of a diameter to permit a free rotation of said plate around the same.

3. VIn a shade roller construction of the character described a roller, a spring arranged in the roller having one end connected therewith, a bar connected to the opposite end ofthe roller, a non-rotatable bearing member connected with said bar, a stationary pin connected with the bearing member and adapted to hold the bearing member and the bar stationary while the roller does not rotate, said bearing member having a shoulder, and a pawl plate connected with the roller formed with a plurality of shoulders adapted to interlock with the shoulder of the bearing member. h

4. 'A shade roller construction comprising a roller provided with a spring having Y ward the center wherebyshoulders are provided, an auxiliary catch arranged in said notch formed with an extension acting as a bridge across the notch when turned to a given position, and a pawl plate connected with said roller formed with a series of notches between which are arranged shoulders adapted to co-act with one of the shoulders on said auxiliary catch for locking the roller against rotation.

5. In a shade roller a pawl and ratchet construction comprising a single non-rotatable member formed as a spring receiving bar, a pin, and a bearing member having a notch producing a tooth or' shoulder, and a pawl structure formed with a central opening merging into a plurality ot radially disposed openings arranged so that there will be a plurality of shoulders projecting into the central opening, said shoulsitioned to interlock temporarily at different times with the shoulder of said bearing member. f

7. In a pawl and ratchet mechanism for shade rollers a non-rotatable bearing meniber formed with a notch extending from the periphery toward the center and arranged so that there will be provided a shoulder, means for holding said bearing member in a given stationary position connecting the saine with the spring of. a shade roller, an

auxiliary catch loosely mounted in said notch formed with an operating extension and adapted to act as a bridge across the outer part of said notch when in one position, and a Ypawl plate formed with a plurality of shoulders adapted to swing said auxiliary bearing memberfrom one position to the other and to engage the shoulder on said bearing member at different times.

DAVID E. SCHIMMEL. 

